Railway truck



Oct. 20, 1942. R. a. COTTRELL RAILWAY TRUCK Filed May 12, 1941 2Sheets-Sheet 1 9 'IIIIIIII/IIIIII/l Oct. 20, 1942. R. s. COTTRELLRAILWAY TRUCK Filed May 12, 1941 2 Sheets-Sheet 2 Z 5 V l IN VENTOR.jiobeffifiotzireil Patented Oct. 20, 1942 RAILWAY TRUCK Robert B.Cottrell, Chicago, 111., assignor to American Steel Foundries, Chicago,111., a corporation of New Jersey Application May 12, 1941, Serial No.393,000

22 Claims.

My invention relates to a railway car truck and especially to a quickwheel change form of truck wherein the bolster is readily dismantledfrom either side frame in order to permit the application of new wheels.

The general object of my invention is to devise anovel form of trucksquaring means peculiarly adaptable to a quick wheel change truck andcomprising means readily dismantleable when it is desired to changewheels.

A specific object of my invention is to devise a novel form of tiebetween the side frame and each end of the bolster which will permitnormal play therebetween but will serve to restrain the bolster againstthe abnormal movements such as might cause unusual wear at the columnsor tend to result in out-of-squareness of the truck parts.

My invention comprehends an arrangement wherein means is associated withthe bolster projecting outboard each side frame with which may beresiliently associated a control bar, the opposite ends of said barextending inboard for resilient connection to the adjacent side framecentrally of each column.

In my novel arrangement, the side frames are of the usual truss type andthe columns are of well-known form, but in each column the inboardflange is extended in order to accommodate the before-mentionedconnection to the stabilizing or control bar. As shown, my novel cartruck comprises spaced side frames and a connecting bolster andassociated with each bolster end is an interlocking member of well-knownform serving to tie said bolster end to the associated side frame.

My present invention contemplates an arrangement of the bolster andinterlocking member which will facilitate connection thereto of such acontrol bar as I have already mentioned. In one embodiment, the controlbar may be connected between projecting portions of the interlockingmember and bolster. In another embodiment, the control bar may beresiliently connected to the interlocking member.

Figure 1 is a fragmentary side elevation of a railway car truckembodying my invention.

Figure 2 is a sectional view therethrough, the section being takensubstantially in the transverse vertical plane bisecting the truck withthe central portion of the bolster being shown in elevation.

Figure 3 is a fragmentary top plan View of the truck structure shown inFigures 1 and 2. In each of Figures 1 to 3, only one side of the truckstructure is shown inasmuch as the arrangement is similar at oppositesides thereof.

Figure 4 is a sectional View. enlarged through the control bar andbolster connection substantially in the transverse vertical planeindicated by the line 4-4 of Figure 1.

Figure 5 is a further sectional View taken through the connection of thecontrol bar to the side frame, said section being taken substantially inthe transverse vertical planes indicated by the line 55 of Figure 1.

Figures 6, '7, and 8 show a modified form in which the control bar isconnected to the bolster end in somewhat different manner, Figure 6being a fragmentary top plan view of said connecting arrangement, Figure7 a fragmentary view in elevation, and Figure 8 a sectional view takensubstantially in the vertical transverse plane bisecting the bolster endas indicated by the line 88 of Figure 7.

Describing the structure in detail, my novel side frame is of Well-knowntruss type comprising the compression member 2, the tension member 4,and the integral column 6 forming therewith a central bolster opening 8,said compression member over said bolster opening having the boxsectionillustrated in Figure 2 and said tension member, likewise, having abox-section beneath said bolster opening with the top chord II], thebottom chord 12, the inboard wall I4, the outboard Wall I6, and theintermediate wall l8, said top chord l0 being widened and formed withupstanding inboard and outboard flanges 20 and 22 defining a spring seat24. The spring seat 24 is cored away on opposite sides thereof asindicated at 26, 26 in order to accommodate the escape of extraneousmatter. On said spring seat may be supported a group of springsdiagrammatically indicated at 28, 28, said spring group having a topspring plate 30 with openings to accommodate as at 32, 32 downwardlyprojecting positioning means on the end of the bolster 34. The generalform of connection of the end of the bolster 34 in the bolster opening 8is of well-known type, said bolster end having a widened top portion,the lateral shelves of which have a well-known configuration best seenat 36 in the top plan view of Figure 3, said configuration comprising agenerally convex form with a central slot in which may be received acentral vertical flange on the adjacent column, said column thus beingcomplementary in form to the adjacent wall of said shelf. Below thewidened shelf portion at the side of the bolster is convenientlypositioned the upstanding end portion of the interlocking membergenerally designated 38, said interlocking member comprising a centralplate portion transversely received in the bottom wall of the bolster inthe manner best seen from a consideration of Figures 2 and 3, said plateportion having a central boss 46 which extends through the bottom wall42 of the bolster and is accommodated by a cored opening through thecenter wall 44.

In the present modification, each upstanding end portion of theinterlocking member 38 is extended outboard the side frame in a jaw-likeprojection 46, said projection taking the form of a housing with acylindrical bottom wall, vertical side walls, and end walls slotted asat 48 (Figure 4) to accommodate the extension therethrough of thecontrol bar 56. In said housing 56 may be received the resilient member5;; of spool-like form, and said resilient member may be secured aroundsaid control bar in any convenient manner as by vulcanizing thereonprior to the assembly of the parts. The inboard wall of the housing 46is extended upwardly and turned in to form the lip 54 (Figure l) underwhich may project d e. 56 t u in afi 'i c may be held in position by thethreaded bolt fithsaid threaded bolt extending through the housing 45.

The control bar 50 of U-li kie form as best seen in the top plan viewof'liiglure 3 has a straight central portion which extends across theend of the bolster and isreceived in the jaws 56, 46 at opposite cornersthereof, 'said bar also having the end portions arranged approximatelyat ninety degree angles to the central portion, each end portion beingturned in an inboard direction and extending past the outboard flange ofthe adjacent column for connection as at: to the inboard flange 64 ofthe column, the form of said connection being shown detail inflfigure Itmay be noted thatsaid inboard flange is materially widened in order toaccommodate this particular form of connection In the detail of Figure5, it may be noted that the end portion of the control bar 50'is formedwith an abutment flange 65 against which may seat a washer 68, andbetween said washer and the column wall 64 may be compressed a resilientbushing ll). At the opposite side of the wall 64; may be 'positioned asimilar bushing 'IEI compressed between, said wall 64 and the Washer 12which is held in position by means of the securing nut l4 threaded onthe end of the bar 56.

By my novel form of connection, each bolster end is permitted normalvertical movement on the supporting spring group andsome slight lateralplay is permitted by virtue of the resilient connection of the controlbar to the side frame. The control bar, however, effectively restrainsthe bolster end against any excessive lateral movement or against anytipping tendency and, at the same time,'serves to dampen somewhat anyunusual vertical oscillations. Vertical movementof the bolster ispermitted by distortion of the resilient connections at the ends of thecontrolbar as well as by distortion of the rubber padsin the clampingmeans.

In the modified arrangement illustrated in Figures 6, 7, and 8, each endportion I02 of the bolster is continued in an outboard direction at eachcorner in an extension I04 with a downwardly opening cavity I06, and thebolster interlocking member. I 08,recessed in the bottom wall of thebolster in the usual manner as at IIOand interlockedtherewith as at 2 isalso formed with an outboard extension IId at each corner thereof,

said 'extension having an upwardly directed cavity I I6 matching thebefore-mentioned cavity in which may be received the resilient spool orpad H8 which surrounds the control bar I and may be vulcanized theretoor simply slipped thereover into position. Said resilient pad or spoolH8 is thus clamped between the members I04 and H4 at opposite corners ofeach bolster end. The end portions of the bar may be secured to the sideframe column I22,in the manner described for the previous modification,and the end of the bolster I62 may cooperate with the column I22 in likemanner as the previous modiflcation and as seen at I24 in Figure 6.

It is to be understood that I do not wish to be limited by the exactembodiments of the device shown which are merely by way of illustrationand not limitation as various and other forms 9.6 a idfihei' irm eie.hereeei eee a e es iwi h-l 75.

of the. device will, of course, be apparent to those skilled in the artwithout departing from the spirit of the invention or the scope of theclaims.

I claim: 1. In a railway car truck, a truss side frame having a tension'membena compression memf her, and integral columns formingi therewitntabolster opening and's p aced window openings, a

spring group on said tension member in said;

opening, a bolster end extending into said opening and seated on saidspring group in guiding engagement with said columns, an interlockingmember recessedin the bottom wall of said bolster and having" guidingengagement with said columns, said interlocking member having meansprojecting outboard each' column, a control bar connected to said means,said] bar having end portions turned inboardfand means connecting saidendsto said coluimnis iand resiliently controlling lateral,'longitudinal and} vertical movement of saidbolster end.

2. In a railway car truck, a truss side frame having a tension membenacompression member, and integral columns forming therewith a bolsteropening and spaced windowopenings aspring group on said tension member"in sai'd'opening, a bolster end extending into said opening and seatedonsaid spring group in guiding engagement with said columns, aninterlocking member recessed in the bottom wall o fis aid bolster andhaving guiding engagement with said columns,

said interlocking member havingmeans project;

ing outboard each column, a control bar can}.

nected between'said means and having end: por tions turned inboard, andmeans resiliently se curing each trea s end portionsito the adjacentcolumn, said means comprising resilient pads secured to saidcolumn and aconnection between said portion'andsaid' pads.

3. In a four wheel truck, a truss side frame having top and bottommembers andspaced columns defining a central bolster opening and spacedwindow openings, each of said columns having a transverse web andinboard and outboard flanges, a bolster end extending into: said bolsteropening with a widened top portion in guiding engagementwith saidcolumns, an interlocking member associated with said bolsterand alsointerlocked with "said columns, clamping means on said-interlockingmember outboardot said frame, andacontr-ol bar resiliently secured aid.damn n ma nified xtendin nt said. w ndow. p n s. or. connection. to, saiinboa d.

flanges.

4; In a four. wheel truck, a trusssideframe having top and bottommembers andspaced c01 umns defining a central. bolster opening. and aspaced window openings, a bolster end extending into said bolster o'pening witha widened top pcr-i tion in guiding engagement with saidcolumns, an interlocking member associated with said bolster end andalso interlocked with said columns, clamping means on said interlockingmember outboard of said frame, and a control bar resiliently secured insaid clamping means and having end portions connected to said columns.

5. In a four wheel truck, a truss side frame having top and bottommembers and spaced columns defining a central bolster opening and spacedwindow openings, each of said columns having a transverse Web andinboard and outboard flanges, a bolster end extending into said bolsteropening with a widened top portion in guiding engagement with saidcolumns, an interlocking member associated with said bolster end andalso interlocked with said columns, clamping means on said interlockingmember outboard of said frame, and a control bar secured at spacedpoints in said clamping means and having inturned end portionsresiliently connected to saidinboard flanges.

6. In a four wheel truck, a truss side frame having top and bottommembers and spaced columns defining a central bolster opening and spacedwindow openings, each of said columns having a transverse web andinboard and outboard flanges, a bolster end extending into said bolsteropening with a widened top portion in guiding engagement with saidcolumns, an interlocking member associated with said bolster end andalso interlocked with said columns, aligned clamping means on saidinterlocking member outboard said frame, and a control bar resilientlysecured in said clamping means and extending into said window openingsfor connection to said inboard flanges.

7. In a railway car truck, a side frame having top and bottom membersand spaced columns forming a central bolster opening, a bolsterextending into said opening with widened portions in guiding engagementwith said columns, an interlocking member associated with said bolsterand having end portions in guiding engagement with said columns, saidinterlocking member having spaced clamping means outboard said frame,and a control bar .resiliently connected in said clamping means, saidcontrol bar having inturned end portions resiliently connected to theinboard flanges of said columns.

8. In a railway car truck, a side frame having top and bottom membersand spaced columns forming a central bolster opening, a bolsterextending into said opening with widened portions in guiding engagementwith said columns, an interlocking member associated with said bolsterand having end portions in guiding engagement with said columns, saidinterlocking member having spaced clamping means outboard said frame,and a control bar resiliently connected in said clamping means andsecured to said columns at spaced points.

9. In a car truck, a side frame having a central bolster opening withvertical columns at opposite sides thereof, a bolster extending intosaid opening with lateral portions in guiding engagement with saidcolumns, an interlocking member associated with said bolster, clampingmeans on said interlocking member outboard said frame, and a control barresiliently secured by said clamping means, said control bar having endportions inturned and connected to the inboard flanges of said columnsrespectively.

10. In a car truck, a side frame having a central bolster opening withvertical columns at opposite sides thereof, a bolster extending intosaid opening with lateral portions in guiding engagement with saidcolumns, an interlocking member asso ciated with said bolster, clampingmeans on said interlocking member outboard said frame, and a control barresiliently secured at spaced points means, said control bar havinginturned end portions resiliently connected to said columnsrespectively.

12. In a railway car truck, a side frame having a bolster opening,vertical columns at opposite sides thereof, a bolster extending intosaid opening with lateral portions in guiding engagement with saidcolumns, an interlocking member associated with said bolster, clampingmeans on said interlocking member, a tie bar resiliently secured atspaced points in said clamping means, and inturned end portions on saidtie bar resiliently connected to said columns respectively.

13. In a car truck, a side frame having a bolster opening, verticalcolumns at opposite sides of said opening, a bolster extending into saidopening, a bolster interlocking member having guiding engagement withsaid columns, clamping means on said member adjacent each column, and acontrol bar secured between said clamping means and having inturned endportions resiliently connected to the inboard flanges of said columnsrespectively.

14. In a railway car truck, a side frame having top and bottom membersand spaced columns forming a central bolster opening, a bolsterextending into said opening with widened portions in guiding engagementwith said columns, an interlocking member having spaced clamping meansoutboard said frame, and a control bar resiliently connected at spacedpoints in said clamping means and having inturned end portions connectedto said columns respectively.

15. In a railway car truck, a side frame having a bolster opening,vertical columns at opposite sides thereof, a bolster extending intosaid opening with lateral portions in guiding engagement with saidcolumns, an interlocking member associated with said bolster, clampingmeans on said member and a tie bar secured in said clamping means andconnected to said columns, said connection comprising resilient padssecured to said columns and to said tie bar.

16. In a car truck, a side frame having a bolster opening, verticalcolumns at opposite sides of said opening, a bolster extending into saidopenin a bolster interlocking member having guiding engagement with saidcolumns, aligned means on said member adjacent each column, and acontrol bar resiliently secured in said means and connected to saidcolumns respectively.

17. In a railway car truck, a side frame having a bolster opening,vertical columns at opposite sides thereof, resilient means on saidframe in said opening, a load bearing unit seated on said means andinterlocked with said columns, said unit comprising a bolster and aninterlocking member, clamping means on said unit, and a tie. bar.resiliently secured in said. clampingmeans: and. connected. to: said.columns.

18.. In. a. railway. car truck,. a side. frame. having av bolsteropening,. vertical columns. at. opposite sides. thereof,.. av bolstermember. extending into. said. opening a. bolster interlocking. member,.clampingtmeans on. at least: one. of. said.members,. and atiebarresiliently. securedin. saidclamping.

means and connected to said columns.

19. In arailway car truck, a. side frame. havingla. bolster: openingverticalcolumns at opposite. sides. thereof resilient means on said.frame in. said. opening a unit. transmitting load. from an associated.car. body tov said. resilient. means.

and. comprising a. bolster and an interlocking member,securing.meansomsaidunit, and a tie bar resiliently. secured by said.last-mentioned means.- and. connected. to. said columns.

20. Ina railway cartruck, aside frame having a bolster opening, verticalcolumns at opposite sides thereon. resilient means. onv said. frame insaid opening,.a. load bearing unit. seated on.

said. means. and interlocked. with said columns, said. unit comprisinga. bolster. and. an. interlocking member, clamping. means. onsaidunit,and.

a tie; bar secured; in. saidclamping means and having a. connection; ateach. end; thereof to the. associated column}, said. connectiomcomprising;

resilient. pads. secured to. said columm and. to: said.

end.

21.. In. a railway car. truck, aside. frame=havingr a bolsteropening.,.vertical columns at. opposite. sides thereof, a bolster unitextending. into said. opening and comprising. means. interlocking. saidunit with. said columns, clamping. means. on v said. unit, and a tiebar. secured in. said clamping.

means and resiliently connected tosaidicolumns,

